Lightning strikes in the distance as spectators leave the course. A storm with rain, lightning and 40-mph-plus winds whipped through Bay Hill on Sunday and delayed the final round of the Arnold Palmer Invitational. Phelan M. Ebenhack, AP

The sign at the first tee buckled in the wind. Phelan M. Ebenhack, AP

This spectator's umbrella is not standing up to the storm. Phelan M. Ebenhack, AP

The warning signs at Bay Hill. Sam Greenwood, Getty Images

Spectator chairs along the rope line, all of them abandoned most of them flipped over. Sam Greenwood, Getty Images

The tables in this spectator area took a beating. Phelan M. Ebenhack, AP

Spectators make their way past a scoreboard that toppled over behind the first tee after a severe thunderstorm passed through on Sunday at the Arnold Palmer Invitational. Phelan M. Ebenhack, AP